John's dad is a mechanic and not a developmentalist by nature. He's often annoyed with 16-year-old Christopher, his son, who has made little progress in deciding what career he wants to pursue, but he spends hours choosing which shirt and hat to wear to have pizza with his friends. A developmentalist might explain that adolescents:

focus on the superficial before the serious, for example, their careers
enjoy making their parents angry.
have too many choices; limit the clothing he has.
are irresponsible.

focus on the superficial before the serious, for example, their careers.

A Development Psychologist might explain that adolescents focus on the superficial that is things that has to do with what is apparent or obvious; not deep penetrating emotionally or intellectually. Before the focus on the serious an example given is their career.

the first settlements began along the huang river because of the importance of the huang river in the beginning of china. it goes back to the story, “the tale of emperor yu”, which references the tale of the great flood, which was caused by the huang river and was believed to create and influence china’s making.

~kinetic ~potential

explanation:

kinetic and potential energies would be types of mechanical energies.